DNS Catch-all for OpenID
February 20th, 2007
We were trying to get our OpenID server working today, and we found that we needed to make a catch-all DNS entry to do it. That way, things like hank.myopenid.url would work. Here’s one way to do it:
*.yourdomain.com. IN A 111.111.111.111
But, we ended up using a CNAME instead:
UPDATE ADD *.yourdomain.com. 86400 IN CNAME yourdomain.com
Then in your Apache virtual hosts directive add a wildcard alias like this
ServerAlias *.yourdomain.com
Incredible.
As I understand the problem is not the OpenID server but the security for cookies, I think that if you were using path like myopenid.url/hank there should be no problem. What was the problem you were facing? (nice DNS tip)